From: Yuanjie Bi (biyuanjie@tsinghua.org.cn)
Date: Thu Aug 16 2007 - 08:53:11 CEST
Dear FLUKA user,
(1)I use a negative decay time to score the neutron and gamma dose rate during irradiation, but FLUKA gives me the dose rate at the end of irradiation instead. I don't know why, are my following descriptions right?
* 10days 5uA
IRRPROFI 864000.0 3.12D+13
RADDECAY 1.0 0.0 3.0 0.0 99999 0.0
DCYTIMES 0.0 3600.0 28800.0 86400.0 604800.0 2592000.0
DCYTIMES -1000.0
USERWEIG 1.0
DCYSCORE 7.0 EWT74Cn EWT74Cn USRBIN
USRBIN 10.0 NEUTRON -40.0 100.0 100.0 0.5EWT74Cn
USRBIN -100.0 -100.0 -0.5 100.0 100.0 10.0&
DCYSCORE 7.0 EWT74Cp EWT74Cp USRBIN
USRBIN 10.0 PHOTON -42.0 100.0 100.0 0.5EWT74Cp
USRBIN -100.0 -100.0 -0.5 100.0 100.0 10.0&
(2)If the irradiation parameters and cooling times are not given, the gamma dose rate scored by usrbin includes radiation resulting from radioactive decay or not?
(3) Is the result difference between 64bit PC and 32bit one?
I hope someone could give me some comments.
Many thanks for your help
====================================================================
Best regards
Yuanjie Bi
BRIF Cyclotron
CIAE
2007-08-16
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